No matter what I'm hunting, I study the anatomy of it, and I know from every single angle I can think of, the bullet path through the body so I can ensure a kill shot if I do my job, and hit where I am aiming.
I'm not kidding, I studied a lot of human anatomy in high school, b/c I thought i wanted to be a DR, but now, I'm glad I did for one reason and one reason only.